Threaded closure for paper containers



Dec 3, 1945- F. J. oBRlEN THREDED CLOSURE FOR PAPER CONTAINERS Filed Dec. 8, 1945 Patented Dec. 3, 1946 THREADED cLosURE FOR PAPER CONTAINERS Frank J. OBrien, Pelham, N. Y., assignor to Continental Can Company, Inc., New York, N. Y., a corporation of New York Application December 8, 1943, Serial No. 513,446

1 Claim.A

The invention relates generally to the manufacture of containers constructed entirely of paper, particularly to containers of the character equipped with a threaded closure member or cap, and it primarily seeks to provide a novel form of threaded closure paper container vand a novel method of forming the same.

It is an object of the invention to provide an all-paper container, including the closure securing thread on the container body.

Another object is to'provide a preformed paper collar equipped with an embossed or pressed out thread and which may be adhesively attached to the container body.

Still another object of the invention is to provide a strong and stiff paper thread on a paper container body.

It is an important consideration in making brous containers to save metal and make the containers at as low a cost as possible on automatic machinery. It is also important to provide such containers with a strong liquid-tight closure and, although metal threads have in the past been applied to such container bodies, such expedient was expensive, difficult to fasten to the container body and necessitated the use of metal which can and should be put to more important uses. By this invention all metal is dispensed with in the improved container structure, and an inexpen sive and easily manufactured all-paper container is produced, eliminating the problem of fastening a metal thread to a paper container.

With the above and other objects in view that will hereinafter appear, the nature of the invention Will be more fully understood by following the detailed description, the appended claim and the several views illustrated in the accompanying drawing.

In the drawing- Figure 1 is a side elevation and part vertical section of a container embodying the invention, the body member and the closure being shown separated.

Figure 2 is a side view of the complete container, the closure and body being iniassembled relation.

Figure 3 is an enlarged partial sectional view of the upper end of the container body with the closure in position.

Referring specifically to the drawing, for a detailed description of the invention, numeral I0 designates a cylindrical container body including side walls II and a bottom wall I2. A threaded closure or cap I3 is provided to close the container I0. Since the construction of the closure I3 has nothing to do with this invention, further detailed description of said closure is thought to be unnecessary.

As shown in Figures 1 and 3, a preformed paper collar I4 having an embossed or pressed out thread l5 formed thereon is attached near the top of the side wall I I of the container by an adhesive material I6, such as waterproof glue. The adhesive material is applied in such a manner that it fills the embossed or pressed out thread I5, in the manner shown in Figures 1 and 3, and when it hardens it serves to stiifen and reinforce the thread I5 against deformation due to handling or the application of the cover thereto.

From the foregoing, it will be apparent that an al1-paper, threaded container is provided by this invention which, is inexpensive to manufacture and eliminates the problem of fastening a metal thread on a container body.

While a present preferred embodiment ofthe invention has been shown and described, it is to be distinctly understood that the invention is not limited to the illustrated example of embodiment, but may be otherwise variously embodied and practiced within the scope of the appended claim.

What is claimed is:

A fiber container comprising a cylindrical body portion, a fiber collar surrounding the upper end of said body portion having an outwardly projecting thread preformed therein and a layer of adhesive material disposed between said collar and the body wall and filling the thread groove on the inner face of the collar so as t0 provide a rigid projecting thread and a cover having a depending skirt with a groove therein conforming to the thread on the collar. 

